Question

What is the compass conjugate of 7+ alt=" \sqrt{-8} " align="absmiddle" class="latex-formula">

Answer 1

I guess you mean the complex conjugate.

$7 + \sqrt{-8} = 7+i\sqrt{8}$

For finding the conjugate, you just flip the sign of the imaginary part:

$7-i\sqrt{8}$